A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5998-00-302-3015
NSN 5925-00-517-7112
NSN 5990-01-327-1558
NSN 6130-00-578-9783
NSN 6105-01-033-3649
NSN 5985-00-211-2507
NSN 5975-01-106-8367
NSN 6150-01-491-8964
NSN 2925-00-791-8776
NSN 6130-00-567-7765
NSN 5905-00-677-4157
NSN 5905-01-278-2585